Volcanic eruption from 12 million years ago preserves a snapshot of extinct animal life. Rhinos that once roamed much of North America 12 million years ago likely lived in large herds, according to a ...

Fifty thousand years ago, North America was home to towering giants. Mammoths roamed the tundra, saber-toothed cats hunted in ...

The Guam kingfisher is no longer found in Guam, but thanks to the help of a handful of zoos, including Cincinnati's, there's ...

As human beings have grown wealthier, they have come to care about environmental stewardship and gained the resources to act on their newfound compassion for wildlife.

The Jurassic fossil Juracanthocephalus reveals a key evolutionary link between rotifers and parasitic acanthocephalans, ...

Birds that had been designated extinct in the wild are now laying eggs on an island in the Pacific and the Cincinnati Zoo played a big role.